September 13, 2009 article in the Arkdemgaz about Elsie & Harry Freund and their art - it specifically mentions her line of "Elsa" jewelry.  pdf of article
link to Elsie Freund website

1942 Silverman Brothers catalog pages.  Also has "S.S. Kresge Sterling Silver Jewelry" on front.  S.S. Kresge was the precursor to K-mart.  (I don't have all of the pages.  Here are 3.  8 1/2 x 11)  [front cover] [page 2] [page 3]